Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 2487
interventional 1779
Observational 606
Registry 102

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Device 344
Drug 332
Drug|placebo 285
Other 241
Behavioral 218
Procedure 88
Device|Other 34
Drug|Other 22
Biological 20
Behavioral|Other 18
Diagnostic Test 18
Dietary Supplement 18
Drug|Procedure 17
Dietary Supplement|placebo 15
Device|Drug 14
Device|Procedure 12
Other|Procedure 9
Biological|placebo 6
Other|placebo 6
Biological|Other 5
Behavioral|Drug 4
Combination Product 4
Dietary Supplement|Other 4
Drug|Other|placebo 4
Behavioral|Device 3
Radiation 3
Behavioral|Procedure 2
Biological|Drug 2
Biological|Procedure 2
Combination Product|Other 2
Device|Diagnostic Test 2
Genetic|placebo 2
Behavioral|Diagnostic Test|Other 1
Behavioral|Dietary Supplement 1
Behavioral|Dietary Supplement|Other 1
Behavioral|placebo 1
Biological|Device 1
Biological|Diagnostic Test 1
Device|Diagnostic Test|Procedure 1
Device|Drug|Other 1
Device|Drug|Other|placebo 1
Device|Drug|Procedure 1
Device|Other|Procedure 1
Device|placebo 1
Device|Radiation 1
Diagnostic Test|Drug 1
Diagnostic Test|Drug|placebo 1
Diagnostic Test|Other 1
Diagnostic Test|Procedure 1
Diagnostic Test|Procedure|Radiation 1
Dietary Supplement|Drug|placebo 1
Drug|Genetic|Other|placebo|Procedure 1
Drug|Other|placebo|Procedure|Radiation 1
Other|Radiation 1
placebo 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 665
NA 120
France 69
United Kingdom 65
Canada 64
Germany 62
Brazil 49
Italy 48
Denmark 40
Spain 33
Japan 32
China 27
Netherlands 27
United States|Canada 26
Sweden 20
Israel 15
Australia 14
Belgium 14
Norway 14
Switzerland 14
Poland 13
Taiwan 12
Korea, Republic of 10
Austria 9
Russian Federation 7
Turkey 7
Egypt 6
Mexico 6
Finland 5
Greece 5
Iran, Islamic Republic of 5
United States|Germany 5
Colombia 4
India 4
Portugal 4
Argentina 3
Czechia 3
Hong Kong 3
Indonesia 3
Ireland 3
Singapore 3
Canada|Finland 2
Cyprus 2
Czechia|Poland 2
Germany|Poland 2
Kenya 2
Paraguay 2
Romania 2
Slovenia 2
Tunisia 2
United States|Australia|Canada|Germany|Greece|Italy|Norway|Poland|Portugal|Spain|Sweden 2
United States|Canada|United Kingdom 2
United States|New Zealand 2
United States|United Kingdom 2
Argentina|Brazil|Croatia|Georgia|Israel|Italy|Lebanon|Netherlands|Poland|Romania|Singapore|Spain|Sweden|Ukraine|United Kingdom 1
Argentina|Germany|Italy|Netherlands|Poland|Russian Federation 1
Armenia|Georgia|Moldova, Republic of 1
Australia|Austria|Belgium|Czechia|Denmark|France|Germany|Netherlands|New Zealand|Poland|United Kingdom 1
Australia|Austria|Canada|Czechia|Germany|Kazakhstan 1
Australia|Austria|Czech Republic|Denmark|Germany|Israel|Latvia 1
Australia|Austria|France|Germany|United Kingdom 1
Australia|Austria|Germany|Hungary|Netherlands|Poland|Russian Federation|United Kingdom 1
Australia|Belgium|Canada|Denmark|Germany|Netherlands|Turkey 1
Australia|Canada|Chile|Mexico|New Zealand 1
Australia|Czech Republic|Finland|France|Germany|Netherlands|Switzerland|United Kingdom 1
Australia|Czechia|Denmark 1
Australia|Czechia|France|Germany|Italy|Lithuania|Poland|Portugal|Spain|Sweden 1
Australia|Czechia|France|Germany|Netherlands|New Zealand|Poland|United Kingdom 1
Australia|Germany 1
Australia|Germany|Italy|Netherlands|New Zealand|Romania 1
Australia|Germany|Malaysia|New Zealand|United Kingdom 1
Australia|Hong Kong|Japan 1
Australia|Ireland|Netherlands|New Zealand|Sweden|United Kingdom 1
Austria|Bulgaria|Germany|Greece|Hungary|Israel|Italy|Poland|Portugal|Spain 1
Austria|Finland|Germany|India|Italy|Netherlands|Norway|Slovakia 1
Austria|France|Italy 1
Austria|Germany 1
Belarus|Belgium|Czechia|France|Italy|Lithuania|Netherlands|Poland|United Kingdom 1
Belgium|Bulgaria|Czech Republic|Denmark|Finland|France|Germany|Hungary|Ireland|Netherlands|Norway|Poland|Portugal|Romania|Russian Federation|Slovakia|South Africa|Spain|Sweden|Switzerland|United Kingdom 1
Belgium|Bulgaria|Czechia|Denmark|Estonia|Finland|France|Germany|Greece|Iceland|Ireland|Latvia|Lithuania|Netherlands|Norway|Poland|Spain|Sweden|United Kingdom 1
Belgium|Bulgaria|France|Hungary|Latvia|Netherlands|Poland|Serbia|Spain|United Kingdom 1
Belgium|Bulgaria|Hungary|Israel|Italy|Poland|Serbia|Spain|Switzerland 1
Belgium|Canada|Finland|France|Germany|India|Israel|Italy|Netherlands|Poland|Spain|Switzerland|United Kingdom 1
Belgium|Canada|France|Hungary|Italy|Netherlands|United Kingdom 1
Belgium|Croatia|Latvia 1
Belgium|Czechia|France|Germany|Italy|Netherlands|Spain|United Kingdom 1
Belgium|Denmark|Germany|Italy|Luxembourg|Netherlands|Norway 1
Belgium|France|Norway|Serbia 1
Belgium|Georgia 1
Belgium|Germany 1
Belgium|Germany|Ireland 1
Belgium|Germany|Italy|Slovakia|United Kingdom 1
Belgium|Germany|Poland|Romania 1
Belgium|Ireland 1
Belgium|Israel 1
Belgium|Israel|Poland|United Kingdom 1
Belgium|Italy 1
Belgium|Norway 1
Belgium|Serbia 1
Belgium|South Africa 1
Belgium|Taiwan 1
Belgium|United Kingdom 1
Belgium|United States|Australia|Austria|Bulgaria|Canada|China|Czech Republic|Denmark|France|Germany|Greece|Hungary|Israel|Italy|Japan|Korea, Republic of|Netherlands|Poland|Portugal|Singapore|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
Brazil|Bulgaria|Germany|Spain|Switzerland 1
Brazil|Canada|Sweden|Taiwan 1
Brazil|Greece|Poland|Spain|United States|Argentina|Australia|Bulgaria|Canada|China|Czechia|Denmark|Estonia|France|Germany|Hungary|Japan|Korea, Republic of|Latvia|Lithuania|Malaysia|Mexico|Netherlands|Portugal|Romania|Russian Federation|Slovakia|South Africa|Sweden|Turkey|Ukraine|United Kingdom 1
Bulgaria 1
Cameroon 1
Cameroon|China|India|Kenya|Lebanon|Mozambique|Nigeria|Philippines|Saudi Arabia|Sudan|Uganda|United Arab Emirates|Zambia 1
Canada|France|Germany|Italy 1
Canada|Malaysia|Sweden 1
China|Hong Kong|Japan|Korea, Republic of 1
Croatia|Czechia|Israel|Latvia|United States|Argentina|Australia|Austria|Belarus|Bosnia and Herzegovina|Brazil|Bulgaria|Canada|Colombia|Denmark|Estonia|Georgia|Germany|Greece|Hungary|Lithuania|Mexico|Netherlands|North Macedonia|Peru|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Turkey|Ukraine|United Kingdom 1
Czech Republic|Denmark|Estonia|Germany|Greece|Guatemala|India|Italy|Latvia|Lithuania|Poland|Romania|Russian Federation|Singapore|Slovakia 1
Czech Republic|France|Italy|Netherlands|Serbia|Slovakia|United Kingdom 1
Czechia|Denmark|Kazakhstan 1
Czechia|Georgia 1
Denmark|Germany|Italy|Netherlands|Switzerland 1
Denmark|Norway|United Kingdom 1
El Salvador|Guatemala 1
Estonia|Slovenia|Spain|Sweden|United Kingdom 1
Estonia|United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|China|Colombia|Costa Rica|Czech Republic|Denmark|Dominican Republic|Finland|France|Germany|Greece|India|Ireland|Italy|Japan|Korea, Republic of|Latvia|Lithuania|Mexico|Netherlands|Norway|Peru|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Slovakia|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey|United Kingdom|Venezuela 1
France|Argentina|Austria|Colombia|Hungary|Israel|Mozambique|Nigeria|Russian Federation|Slovakia|South Africa|Tunisia 1
France|Argentina|Belgium|Canada|Czechia|Germany|Italy|Lebanon|Norway|Poland|Portugal|Russian Federation|Saudi Arabia|Slovakia|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
France|Australia|Czechia|Denmark|Finland|Germany|Netherlands|Norway|Sweden|Switzerland|United Kingdom 1
France|Germany|Ireland|Italy|Netherlands|United Kingdom 1
France|Germany|Italy|Netherlands|Portugal|Spain 1
France|Germany|Italy|Netherlands|Spain|United Kingdom 1
France|Italy|Portugal|Spain 1
France|Martinique 1
France|Sweden 1
France|United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Chile|Colombia|Czechia|Denmark|Germany|Greece|Hungary|Ireland|Israel|Italy|Mexico|Netherlands|Norway|Peru|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Slovakia|South Africa|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
France|United States|Bulgaria|Czechia|Georgia|Hungary|Poland|Russian Federation|Spain|Ukraine|United Kingdom 1
Georgia 1
Georgia|Slovenia 1
Georgia|Ukraine 1
Germany|Austria|Belgium|Czech Republic|Denmark|Finland|Israel|Norway|Poland|Sweden 1
Germany|Hungary|Italy|Poland|Portugal|Serbia|Slovenia|Spain 1
Germany|Hungary|Spain 1
Germany|India|Peru 1
Germany|Israel|Spain 1
Germany|Italy 1
Germany|Italy|Netherlands|Poland 1
Germany|Italy|Netherlands|Serbia 1
Germany|Italy|United States|Argentina|Belgium|Brazil|Canada|Czech Republic|France|Netherlands|Norway|Poland|Romania|Russian Federation|Spain|Sweden|Switzerland|United Kingdom 1
Germany|Lithuania 1
Germany|Poland|Russian Federation 1
Germany|Serbia 1
Germany|Spain|Switzerland 1
Germany|Sweden 1
Germany|Switzerland 1
Germany|United States|Argentina|Austria|Belgium|Brazil|Bulgaria|Canada|Colombia|Czechia|Denmark|Estonia|France|Guatemala|Hungary|India|Israel|Italy|Latvia|Lithuania|Mexico|Netherlands|Peru|Portugal|Puerto Rico|Romania|Russian Federation|Serbia|Slovakia|Spain|Thailand|Turkey|United Kingdom 1
Greece|Italy|Argentina|Germany|Norway|Poland|Romania|Russian Federation|Spain|Ukraine 1
Greece|Poland 1
Hungary|Poland 1
Hungary|United States|Argentina|Belgium|Brazil|Canada|Colombia|Czech Republic|Finland|France|Germany|India|Israel|Italy|Philippines|Poland|Romania|Russian Federation|Singapore|Slovakia|Spain|Sweden|Taiwan|Turkey 1
Ireland|Netherlands 1
Israel|Germany|Hungary|United States|Belgium|Denmark|Netherlands|Poland|Sweden|United Kingdom 1
Italy|Latvia|United States|Argentina|Belgium|Brazil|Canada|Czechia|Estonia|Finland|France|Germany|Hungary|Israel|Lithuania|Netherlands|Poland|Romania|Serbia|Spain|Switzerland|Turkey 1
Italy|Netherlands|United Kingdom 1
Italy|Switzerland 1
Italy|United Kingdom 1
Japan|United States|Brazil|Canada|Denmark|Korea, Republic of|Slovakia|South Africa|Sweden 1
Kazakhstan 1
Malta|Belgium|Croatia|Cyprus|Denmark|Estonia|France|Hungary|Israel|Italy|Latvia|Lithuania|Norway|Poland|Portugal|Russian Federation|Slovenia|Spain 1
Mozambique|Philippines|Uganda 1
Netherlands|United Kingdom 1
Panama 1
Poland|Russian Federation 1
Poland|Russian Federation|Slovenia 1
Poland|Slovakia|Spain|Sweden|United Kingdom 1
Poland|United States|Australia|Austria|Bulgaria|Canada|Czech Republic|Denmark|Finland|France|Germany|Greece|Hungary|Israel|Italy|Korea, Republic of|Lithuania|Netherlands|Norway|Portugal|South Africa|Spain|Sweden|Taiwan|Turkey 1
Serbia 1
Serbia|United States|Australia|Austria|Belgium|Canada|Denmark|Germany|Greece|Hong Kong|Hungary|Italy|Japan|Netherlands|Norway|Russian Federation|Saudi Arabia|Spain|Sweden 1
Spain|Sweden|United Kingdom 1
Spain|Switzerland|Japan|Netherlands|Norway|United States|Austria|Denmark|Germany|Greece|Italy|United Kingdom 1
Sweden|United States 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Chile|China|Colombia|Czechia|Denmark|France|Germany|Greece|Hungary|Italy|Japan|Lithuania|Mexico|Netherlands|New Zealand|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Slovakia|South Africa|Spain|Sweden|Switzerland|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Chile|Czechia|Denmark|Estonia|Finland|France|Germany|Hong Kong|Hungary|India|Israel|Italy|Latvia|Lithuania|Mexico|Netherlands|Norway|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Slovakia|South Africa|Spain|Sweden|Switzerland|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Chile|Czechia|Denmark|Finland|France|Germany|Greece|Hungary|Israel|Italy|Korea, Republic of|Latvia|Lithuania|Netherlands|New Zealand|Poland|Portugal|Romania|Russian Federation|Slovakia|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
United States|Argentina|Australia|Austria|Bulgaria|Canada|Germany|Korea, Republic of|Russian Federation|Slovakia 1
United States|Argentina|Australia|Belgium|Brazil|Canada|China|Colombia|Czechia|Germany|Hungary|India|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Romania|Singapore|South Africa|Spain|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|China|Czechia|France|Germany|Hungary|India|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Spain|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Czech Republic|Denmark|France|Germany|Greece|Hungary|Ireland|Italy|Mexico|Netherlands|Norway|Poland|Portugal|Russian Federation|South Africa|Spain|Sweden|Switzerland|United Kingdom 1
United States|Argentina|Australia|Belgium|Bulgaria|Canada|Croatia|France|Germany|Italy|Korea, Republic of|Lithuania|Netherlands|Poland|Russian Federation|Spain|Switzerland|Taiwan|Turkey|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|Chile|Denmark|Greece|Hungary|Israel|Poland|Portugal|Romania|South Africa|Sweden 1
United States|Argentina|Australia|Belgium|Canada|Czechia|France|Germany|Greece|Hong Kong|Hungary|India|Ireland|Italy|Korea, Republic of|Mexico|Netherlands|Poland|Portugal|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Ukraine|United Arab Emirates|United Kingdom|Venezuela 1
United States|Argentina|Australia|Brazil|Bulgaria|Canada|Chile|China|Colombia|France|Germany|Greece|India|Israel|Korea, Republic of|Lithuania|Malaysia|Mexico|Netherlands|New Zealand|Norway|Poland|Russian Federation|Singapore|Sweden|Taiwan|Thailand|Ukraine 1
United States|Argentina|Australia|Brazil|Bulgaria|Canada|Czech Republic|Finland|France|Germany|India|Israel|Italy|Netherlands|Poland|Romania|Russian Federation|Sweden 1
United States|Argentina|Austria|Belgium|Bulgaria|Canada|Colombia|Germany|Greece|Hungary|Israel|Italy|Japan|Malaysia|Poland|Portugal|Russian Federation|Singapore|South Africa|Spain|Taiwan 1
United States|Argentina|Austria|Brazil|Bulgaria|Czechia|Denmark|France|Germany|Hungary|Israel|Poland|Romania|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Argentina|Austria|Bulgaria|Canada|China|Croatia|Czechia|Finland|France|Germany|Hungary|India|Israel|Italy|Japan|Jordan|Korea, Republic of|Lebanon|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Saudi Arabia|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey 1
United States|Argentina|Austria|Bulgaria|Denmark|France|Germany|Hungary|Israel|Poland|Romania|Russian Federation|Sweden|United Kingdom 1
United States|Argentina|Belgium|Brazil|Bulgaria|Canada|Chile|Czechia|Denmark|Estonia|Finland|France|Germany|Guatemala|Hong Kong|Hungary|India|Israel|Italy|Korea, Republic of|Latvia|Lithuania|Malaysia|Mexico|Netherlands|Panama|Peru|Philippines|Poland|Portugal|Romania|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Taiwan|Thailand|Turkey|United Kingdom 1
United States|Argentina|Belgium|Brazil|Bulgaria|Canada|China|Czechia|France|Hungary|Japan|Mexico|Netherlands|Peru|Poland|Romania|Russian Federation|Saudi Arabia|Spain|Taiwan|Vietnam 1
United States|Argentina|Brazil|Bulgaria|Canada|China|Czechia|Denmark|Germany|Hungary|India|Japan|Netherlands|Poland|Russian Federation|Slovakia|Sweden|Taiwan|United Kingdom|Vietnam 1
United States|Argentina|Brazil|Bulgaria|Canada|Denmark|Italy|Japan|Korea, Republic of|Slovakia|South Africa|Sweden 1
United States|Argentina|Brazil|Canada|Finland 1
United States|Argentina|Brazil|Canada|Georgia|Russian Federation 1
United States|Argentina|Brazil|Canada|Germany|India|Italy|Netherlands|Poland|Romania|Russian Federation|Singapore|Spain|Venezuela 1
United States|Argentina|Bulgaria|Canada|Czechia|Germany|Hungary|Israel|Poland|Romania|Russian Federation|Slovakia 1
United States|Argentina|Canada|Czechia|France|Germany|Greece|Italy|Japan|Netherlands|Poland|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Bulgaria|Canada|China|Czech Republic|Denmark|France|Germany|Greece|Hungary|Israel|Italy|Japan|Korea, Republic of|Netherlands|Poland|Singapore|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Chile|Denmark|Finland|France|Germany|Greece|Hungary|India|Israel|Italy|Malaysia|Netherlands|Norway|Romania|Saudi Arabia|Serbia|Slovakia|Slovenia|South Africa|Spain|Switzerland|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|China|Colombia|Denmark|Finland|France|Germany|Greece|India|Israel|Italy|Korea, Republic of|Lebanon|Malaysia|Malta|Netherlands|Poland|Portugal|Puerto Rico|Saudi Arabia|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Croatia|Denmark|France|Germany|Italy|Japan|Netherlands|Poland|Spain|United Kingdom 1
United States|Australia|Austria|Canada|Denmark|France|Italy|Saudi Arabia 1
United States|Australia|Austria|France|Germany|Italy|Netherlands|Portugal|Slovenia|Spain|Switzerland|United Kingdom 1
United States|Australia|Belgium|Bulgaria|Canada|Czech Republic|Finland|France|Germany|Greece|Hungary|Italy|Lithuania|Netherlands|Norway|Poland|Russian Federation|Slovakia|United Kingdom 1
United States|Australia|Belgium|Bulgaria|Canada|Czechia|Germany|Hungary|Italy|Lithuania|Netherlands|Poland|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Israel|Poland|Spain 1
United States|Australia|Belgium|Netherlands|United Kingdom 1
United States|Australia|Canada|Israel 1
United States|Australia|Canada|New Zealand 1
United States|Australia|Canada|New Zealand|Poland 1
United States|Australia|Czech Republic|Finland|Germany|Italy|Netherlands|Norway|Romania|Russian Federation|Spain|Sweden|Turkey 1
United States|Australia|Czechia 1
United States|Australia|Czechia|Germany|Hungary|Italy|Norway|United Kingdom 1
United States|Australia|Denmark|France|Germany|Italy|Netherlands|United Kingdom 1
United States|Australia|New Zealand 1
United States|Austria|Belgium|Bulgaria|Germany|Greece|Israel|Italy|Japan|Poland|Portugal|Spain 1
United States|Austria|Belgium|Canada|Czech Republic|Denmark|France|Germany|Hungary|Ireland|Italy|Norway|Spain|Sweden|United Kingdom 1
United States|Austria|Denmark|France|Germany|Greece|Israel|Poland|Switzerland|United Kingdom 1
United States|Belgium|Argentina|Australia|Austria|Brazil|Bulgaria|Canada|China|Colombia|Croatia|Czechia|Denmark|Finland|France|Germany|Greece|Guatemala|Hungary|India|Israel|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Norway|Peru|Philippines|Poland|Romania|Russian Federation|Serbia|Singapore|Slovakia|Slovenia|South Africa|Spain|Sweden|Switzerland|Taiwan|Turkey|United Kingdom 1
United States|Belgium|Bulgaria|Germany|Greece|Israel|Italy|Japan|Netherlands|Poland|Spain 1
United States|Belgium|Canada|Germany|Israel|Netherlands|Poland|Spain|Switzerland 1
United States|Belgium|Canada|Italy|Netherlands 1
United States|Belgium|Germany|Netherlands|Singapore 1
United States|Brazil|Canada|France|Germany|Italy|Japan|Spain|United Kingdom 1
United States|Bulgaria|Canada|Chile|Hungary|Korea, Republic of|Romania|Russian Federation|Thailand|Ukraine 1
United States|Bulgaria|Canada|Croatia|Czechia|Israel|Italy|Japan|Korea, Republic of|Lebanon|Poland|Portugal|Singapore|South Africa|Switzerland|Taiwan|Thailand|Turkey 1
United States|Bulgaria|Finland|Germany|Hungary|Italy|Puerto Rico|Slovakia|Spain|Turkey|United Kingdom 1
United States|Canada|China 1
United States|Canada|Czech Republic|Germany|Italy|Netherlands|South Africa|Sweden 1
United States|Canada|France 1
United States|Canada|France|Germany|Ireland|Italy|Japan|Netherlands|Spain|Switzerland|United Kingdom 1
United States|Canada|France|Germany|Italy|Netherlands|Spain|Switzerland|United Kingdom 1
United States|Canada|Germany|Hong Kong|Italy|Malaysia|Netherlands|Norway|Spain|Sweden 1
United States|Canada|Hong Kong|United Kingdom 1
United States|Canada|Hungary|Netherlands|Poland|Serbia 1
United States|Canada|Italy 1
United States|Canada|Italy|Netherlands 1
United States|Canada|Netherlands 1
United States|Canada|New Zealand 1
United States|Canada|Puerto Rico 1
United States|Czech Republic|Georgia|Germany|Poland|Russian Federation|Ukraine 1
United States|Czechia|Germany 1
United States|Czechia|Poland 1
United States|Denmark|Germany|Netherlands|Norway|Spain 1
United States|Finland|Germany|Netherlands|Sweden 1
United States|France|Germany 1
United States|France|Germany|Netherlands|Poland|Sweden|United Kingdom 1
United States|France|Greece|Poland|United Kingdom 1
United States|France|Italy|United Kingdom 1
United States|Georgia|Russian Federation|United Kingdom 1
United States|Germany|Israel 1
United States|Germany|Israel|Italy|Netherlands|Sweden 1
United States|Germany|Italy 1
United States|Germany|Jordan|Poland|Russian Federation 1
United States|Germany|Netherlands|Poland 1
United States|Germany|United Kingdom 1
United States|India 1
United States|Israel 1
United States|Israel|Mexico|Romania|Russian Federation|Ukraine 1
United States|Japan|Netherlands|United Kingdom 1
United States|Paraguay 1
United States|Romania 1
United States|Serbia 1
United States|Switzerland 1

Sites per Study

Site_count Study_Count
1 1159
2 130
3 58
4 40
5 23
6 20
7 15
8 10
9 14
10 18
11 11
12 8
13 11
14 6
15 12
16 10
17 9
18 8
19 5
20 5
21 4
22 8
23 5
24 8
25 6
26 5
27 1
28 3
29 1
30 2
31 4
32 4
33 5
34 4
35 5
36 4
37 4
38 2
39 2
40 3
42 3
44 2
45 3
46 1
47 5
48 2
49 1
50 2
51 2
52 3
53 3
54 4
55 1
56 1
58 1
59 2
62 1
64 3
65 2
66 1
67 1
69 2
71 1
72 1
73 1
75 2
76 2
77 1
78 1
79 1
80 1
81 3
82 1
83 1
86 2
90 2
94 2
95 1
97 1
99 1
101 1
102 1
105 2
108 3
109 1
113 1
116 1
118 1
121 1
124 1
125 1
127 1
134 1
137 1
139 1
150 1
154 1
159 1
163 1
166 1
177 1
189 1
190 1
203 1
204 1
213 1
218 1
226 1
231 1
235 1
239 1
267 1
270 1
308 2
331 1
337 1
378 2
397 1
398 1
414 1
417 1
466 1
518 1
542 1
578 1
617 2
754 1
808 2
1034 1

Phase

Phase Study_Count
N/A 915
Phase 2 237
Phase 4 220
Phase 3 203
Phase 1 86
Phase 1/Phase 2 49
Phase 2/Phase 3 49
Early Phase 1 20

Number of Arms

Number_of_Arms Count_of_Studies
1 358
2 1028
3 138
4 61
5 15
6 15
7 3
8 2
10 1
NA 158

Number of Updates

Count of Versions Count of Studies
1 188
2 241
3 226
4 215
5 164
6 142
7 104
8 80
9 65
10 53
11 46
12 37
13 27
14 30
15 10
16 15
17 13
18 15
19 9
20 11
21 7
22 7
23 6
24 8
25 2
26 4
27 3
28 2
29 3
30 5
31 1
32 3
33 3
34 1
35 1
36 3
37 1
39 3
41 2
42 3
46 2
47 1
48 1
49 1
51 1
52 2
55 1
58 2
66 1
67 1
68 1
71 1
80 1
82 1
88 1
90 1
249 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 10812 1591 6.795726
Contacts/Locations 5870 1358 4.322533
Recruitment Status 2430 1378 1.763425
Study Design 1853 1170 1.583761
None (earliest Version on record) 1779 1779 1.000000
Outcome Measures 1384 780 1.774359
Eligibility 1147 681 1.684288
Sponsor/Collaborators 1112 725 1.533793
Arms 1078 711 1.516174
Interventions 1078 711 1.516174
Study Description 1006 612 1.643791
Study Identification 946 602 1.571429
Oversight 751 606 1.239274
References 468 278 1.683453
Conditions 332 244 1.360656
Results 277 277 1.000000
More Information 234 142 1.647887
IPDSharing 193 173 1.115607
Results Submission Events 111 111 1.000000
Documents 84 76 1.105263
Baseline Characteristics 67 59 1.135593
Reported Adverse Events 46 43 1.069767
Participant Flow 37 35 1.057143
2020Recruitment Status 2 2 1.000000
2020 Outcome Measures 1 1 1.000000
2020 Study Status 1 1 1.000000
Quality Control Review has not concludedReturned: February 7 1 1 1.000000
Quality Control Review has not concludedReturned: January 31 1 1 1.000000
Quality Control Review has not concludedReturned: March 30 1 1 1.000000
Quality Control Review has not concludedReturned: May 28 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 5.0 1.000 4.00000 4.000 1.0000 5.0000 1.000 4.0000
1st Qu. 13.0 30.000 12.00000 24.500 30.5000 48.5000 80.000 40.0000
Median 20.5 79.000 25.00000 36.500 69.0000 101.0000 267.000 80.0000
Mean 50.5 563.102 36.77647 67.625 136.6426 229.7708 1330.096 558.0323
3rd Qu. 42.5 209.500 49.00000 60.000 160.0000 276.0000 1009.000 304.0000
Max. 300.0 197692.000 150.00000 1000.000 2135.0000 2200.0000 25875.000 50000.0000

Trial Group Type

group_type Group_Count
Experimental 1571
Active Comparator 782
Placebo Comparator 386
No Intervention 292
Other 219
NA 158
Sham Comparator 34

Intervention Model

intervention_model Study_Count
Parallel Assignment 1143
Single Group Assignment 429
Crossover Assignment 137
Factorial Assignment 32
Sequential Assignment 21
NA 17

Primary Purpose

primary_purpose Study_Count
Treatment 1176
Supportive Care 140
Diagnostic 114
Prevention 89
Health Services Research 71
Other 62
NA 56
Basic Science 51
Device Feasibility 10
Screening 8
Educational/Counseling/Training 2

Observational Studies

Studies by Country

Country Study_Count
United States 213
NA 66
Germany 49
France 30
Italy 26
United Kingdom 24
Canada 15
China 14
Israel 14
Spain 11
Netherlands 10
Australia 7
Denmark 6
Korea, Republic of 6
Sweden 6
Poland 5
Switzerland 5
Taiwan 5
Turkey 5
Greece 4
Japan 4
Austria 3
Brazil 3
Singapore 3
Belgium 2
Croatia 2
Egypt 2
Finland 2
Indonesia 2
Norway 2
Russian Federation 2
Tunisia 2
United States|Canada 2
United States|Canada|Germany 2
United States|Israel 2
Australia|Austria|Canada|Czechia|Germany|Kazakhstan 1
Australia|Belgium|Denmark|France|United Kingdom 1
Austria|Belgium|Canada|France|Italy|United States|Netherlands|Spain 1
Austria|Belgium|Denmark|Germany|Hong Kong 1
Austria|Czech Republic|France|Germany|Israel|Italy|Latvia|Netherlands|Spain|United Kingdom 1
Austria|Denmark|Finland|Germany|Italy|Latvia|Netherlands|Singapore|Spain|Switzerland|United Kingdom 1
Austria|Germany|Hungary 1
Austria|Hungary|North Macedonia|Poland|Serbia|Spain 1
Bangladesh 1
Belgium|France 1
Belgium|Spain|Switzerland 1
China|Hong Kong|India|Indonesia|Japan|Korea, Republic of|Malaysia|Philippines|Singapore|Thailand 1
Czechia 1
Denmark|France|Germany 1
Denmark|France|Germany|Netherlands|Sweden|United Kingdom 1
Former Serbia and Montenegro|Belgium|India|Kuwait|Russian Federation|Saudi Arabia 1
France|Germany 1
France|Lithuania 1
France|Sweden 1
Germany|Switzerland 1
Hungary 1
India 1
Italy|Spain 1
Oman 1
Pakistan 1
Romania 1
Slovenia 1
Thailand 1
United States|Argentina|Colombia|Japan 1
United States|Australia 1
United States|Australia|Belgium|Canada|Denmark|France|Germany|Hong Kong|Ireland|Italy|Netherlands|Spain|United Kingdom 1
United States|Austria|Belgium|Denmark|Finland|France|Germany|Hong Kong|Italy|Netherlands|Norway|Spain|United Kingdom 1
United States|Austria|France|Germany 1
United States|Austria|Germany 1
United States|Belgium|Canada|France|Germany|Italy|Netherlands|Sweden|Switzerland|United Kingdom 1
United States|Belgium|Canada|France|Germany|Netherlands|Switzerland|United Kingdom 1
United States|Belgium|Canada|Germany|Japan|Poland|Portugal 1
United States|Belgium|Greece|Italy|Switzerland|United Kingdom 1
United States|Bulgaria|Canada|Czech Republic|France|Germany|Italy|Russian Federation|Sweden 1
United States|Canada|China|France|Germany|Hong Kong|India|Malaysia|Malta|Pakistan|Poland|Puerto Rico|Romania|Singapore|Taiwan|Thailand 1
United States|Canada|Israel|Singapore|United Kingdom 1
United States|Canada|United Kingdom 1
United States|Croatia 1
United States|Czech Republic|Germany|Hong Kong|Hungary|Israel|Italy|Malaysia|Netherlands|Slovakia|Thailand|United Kingdom 1
United States|Germany|Greece|Italy|New Zealand|Poland|Switzerland|United Kingdom 1
United States|Germany|Hong Kong|Italy|Poland 1
United States|Greece|Ireland|Italy|Netherlands|Spain|Switzerland 1
United States|India|Sweden 1
United States|Italy 1
United States|Netherlands|Switzerland 1

Sites per Study

Site_count Study_Count
1 422
2 44
3 19
4 17
5 13
6 7
7 8
8 5
9 1
10 4
11 2
12 3
13 4
14 2
15 4
16 2
17 1
18 1
19 4
20 1
21 1
23 1
24 2
25 2
27 1
28 1
29 1
32 2
33 1
34 2
41 1
45 1
51 1
52 3
60 3
64 1
67 1
71 1
77 1
82 2
86 1
88 1
93 1
99 2
103 1
105 1
108 1
112 1
128 1
129 1
144 1
343 1

Number of Updates

Count of Versions Count of Studies
1 80
2 117
3 96
4 80
5 64
6 39
7 24
8 31
9 19
10 11
11 7
12 7
13 9
14 6
15 2
17 3
19 2
20 1
26 1
27 2
32 1
33 1
51 1
58 1
83 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 2389 526 4.541825
Contacts/Locations 946 409 2.312958
Recruitment Status 685 436 1.571101
None (earliest Version on record) 606 606 1.000000
Study Design 540 375 1.440000
Sponsor/Collaborators 311 214 1.453271
Eligibility 249 172 1.447674
Study Description 242 160 1.512500
Study Identification 218 157 1.388535
Outcome Measures 191 149 1.281879
Groups 157 116 1.353448
Interventions 157 116 1.353448
Oversight 137 119 1.151261
References 108 61 1.770492
Conditions 80 58 1.379310
IPDSharing 58 57 1.017544
Results 30 30 1.000000
More Information 18 14 1.285714
Results Submission Events 16 16 1.000000
Documents 10 9 1.111111
Baseline Characteristics 4 4 1.000000
Participant Flow 2 2 1.000000
Reported Adverse Events 2 2 1.000000

Enrollment Metrics

Measure Observational
Min 1.00
1st Qu 60.00
Median 180.00
Mean 14746.72
3rd Qu 581.25
Max 2240000.00

Observation Model

observational_model Study_Count
Cohort 356
Case-Only 81
NA 49
Other 40
Case-Control 37
Case Control 30
Case-Crossover 5
Defined Population 3
Ecologic or Community 3
Defined Population, Natural History 2

Time Perspective

time_perspective Study_Count
Prospective 461
Retrospective 72
Cross-Sectional 33
NA 24
Other 11
Longitudinal, Prospective 3
Cross-Sectional, Prospective 1
Longitudinal, Retrospective 1

Registries

Studies by Country

Country Study_Count
United States 15
Germany 13
Italy 8
Israel 5
NA 5
Canada 4
China 4
France 4
Poland 3
Japan 2
Korea, Republic of 2
Netherlands 2
Russian Federation 2
Singapore 2
Spain 2
Switzerland 2
Tunisia 2
United Kingdom 2
Australia|Austria|Belgium|Denmark|Finland|Germany|Italy|Kazakhstan|Lebanon|Netherlands|Norway|Poland|Serbia|Spain|Switzerland|Turkey|United Kingdom 1
Australia|Germany 1
Austria 1
Austria|Australia|Belgium|Czechia|France|Germany|Hungary|Israel|Latvia|Poland|Portugal|Singapore|Slovakia|South Africa|Spain|Switzerland|Taiwan|United Kingdom 1
Austria|Belgium|Colombia|Denmark|Finland|France|Germany|Hong Kong|Ireland|Israel|Italy|Japan|Netherlands|Portugal|Singapore|Spain|Switzerland|United Kingdom 1
Colombia 1
Germany|Hungary|Italy|Kazakhstan|Netherlands|Turkey|United Kingdom 1
Germany|Italy 1
Germany|Italy|Poland|Russian Federation|Slovenia|United Kingdom 1
Germany|Sweden|Switzerland 1
Hungary 1
Kuwait 1
Mexico 1
Sweden 1
Turkey 1
Uganda 1
United States|Argentina|Brazil|China|Colombia|India|Japan|Korea, Republic of|Puerto Rico 1
United States|Australia|Austria|Belgium|Canada|Czechia|France|Germany|Italy|Netherlands|Portugal|Slovakia|Spain|Switzerland|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Denmark|Former Serbia and Montenegro|France|Germany|Italy|Netherlands|Spain|Sweden|Switzerland 1
United States|Austria|Germany|Poland 1
United States|Belgium|Canada|France|Germany|Hungary|Italy|Korea, Republic of|Malaysia|Netherlands|Slovakia|Spain|United Kingdom 1
United States|Belgium|Canada|France|Germany|Italy|Korea, Republic of|Malaysia|Netherlands|Serbia|Spain|Sweden|Switzerland|United Kingdom 1
United States|France|Germany|Italy|Korea, Republic of|Malaysia|Spain|Sweden|United Kingdom 1

Sites per Study

Site_count Study_Count
1 71
2 2
5 3
6 1
8 1
9 1
11 2
12 1
13 1
16 1
17 1
19 1
21 1
22 1
31 1
32 1
33 1
34 1
48 1
69 1
77 1
79 1
83 1
106 1
123 1
130 1
139 1
199 1

Number of Updates

Count of Versions Count of Studies
1 19
2 16
3 17
4 11
5 15
6 4
7 7
8 1
10 2
11 2
12 1
13 2
14 1
20 1
26 1
28 1
54 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 418 83 5.036145
Contacts/Locations 235 62 3.790323
None (earliest Version on record) 102 102 1.000000
Recruitment Status 84 54 1.555556
Study Design 53 39 1.358974
Study Description 47 22 2.136364
Outcome Measures 44 29 1.517241
Eligibility 31 19 1.631579
Sponsor/Collaborators 25 19 1.315789
Oversight 24 19 1.263158
Study Identification 20 16 1.250000
Groups 13 10 1.300000
Interventions 13 10 1.300000
Conditions 12 10 1.200000
References 12 10 1.200000
IPDSharing 9 8 1.125000
Results 4 4 1.000000
Results Submission Events 4 4 1.000000
Documents 3 3 1.000000

Enrollment Metrics

Measure Registries
Min 10.0
1st Qu 200.0
Median 610.0
Mean 107147.9
3rd Qu 2030.0
Max 7205000.0

Registry Model

observational_model Study_Count
Cohort 81
Case-Only 10
Other 5
Case-Control 4
Case-Crossover 1
NA 1

Time Perspective

time_perspective Study_Count
Prospective 91
Other 6
Cross-Sectional 4
Retrospective 1

Follow-up

target_duration Study_Count
12 Months 14
1 Year 12
5 Years 11
3 Years 10
2 Years 9
1 Day 8
10 Years 6
6 Months 5
3 Months 3
1 Month 2
18 Months 2
24 Months 2
4 Weeks 2
5 Days 2
8 Years 2
1 Week 1
12 Years 1
15 Years 1
3 Days 1
30 Days 1
30 Months 1
376 Days 1
4 Months 1
4 Years 1
50 Years 1
6 Years 1
7 Months 1